﻿using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebApplication2
{
    public partial class Login : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            string name = TextBox1.Text;
            string pwd = TextBox2.Text;

            string constr = "server = . ; uid = sa ; pwd = 123456 ; database = Student_db";
            SqlConnection con = new SqlConnection(constr);
            string sql = "select * from StudentInfo where stu_name = @name and password = @pwd ";
            SqlParameter[] pars =
            {
                new SqlParameter("@name",name),
                new SqlParameter("@pwd",pwd)
            };
            try
            {
                con.Open();
                SqlCommand cmd = new SqlCommand(sql, con);
                cmd.Parameters.AddRange(pars);
                SqlDataReader sdr = cmd.ExecuteReader();
                if (sdr.Read())
                {
                    Session["Username"] = name;
                    Literal1.Text = "登录成功";
                    Response.Redirect("Home.aspx");
                }
                else
                {
                    Literal1.Text = "密码或用户名输入有误！";
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message.ToString());
            }
            finally
            {
                if (con != null)
                {
                    con.Close();
                }
            }
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            Response.Redirect("Register.aspx");
        }
    }
}